我正在努力研究预测模型。我需要安装R中的插入包。但无论我尝试什么，我仍然得到以下错误：
**d package: ggplot2
Error in library.dynam(lib, package, package.lib) :
DLL ‘digest’ not found: maybe not installed for this architecture?
Error: package ‘ggplot2’ could not be loaded**
我已经尝试安装所有类型的包，但我仍然得到相同的错误...请让我知道我应该怎么做。我也使用最新版本的R.
> sessionInfo()
R version 3.1.1 (2014-07-10)
Platform: x86_64-w64-mingw32/x64 (64-bit)
locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] lattice_0.20-29
loaded via a namespace (and not attached):
[1] class_7.3-11 grid_3.1.1 tools_3.1.1